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Dependent link padding algorithms for low latency anonymity systems

Published: 27 October 2008 Publication History

Abstract

Low latency anonymity systems are susceptive to traffic analysis attacks. In this paper, we propose a dependent link padding scheme to protect anonymity systems from traffic analysis attacks while providing a strict delay bound. The covering traffic generated by our scheme uses the minimum sending rate to provide full anonymity for a given set of flows. The relationship between user anonymity and the minimum covering traffic rate is then studied via analysis and simulation. When user flows are Poisson processes with the same sending rate, the minimum covering traffic rate to provide full anonymity to m users is O(log m). For Pareto traffic, we show that the rate of the covering traffic converges to a constant when the number of flows goes to infinity. Finally, we use real Internet trace files to study the behavior of our algorithm when user flows have different rates.

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    cover image ACM Conferences
    CCS '08: Proceedings of the 15th ACM conference on Computer and communications security
    October 2008
    590 pages
    ISBN:9781595938107
    DOI:10.1145/1455770
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Published: 27 October 2008

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    Author Tags

    1. anonymity systems
    2. link padding
    3. traffic analysis attack

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    CCS '08 Paper Acceptance Rate 51 of 280 submissions, 18%;
    Overall Acceptance Rate 1,261 of 6,999 submissions, 18%

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    • (2023)Design of Privacy-Preserving in Multi-link Vehicle-Ground CommunicationEmerging Networking Architecture and Technologies10.1007/978-981-19-9697-9_17(209-220)Online publication date: 1-Feb-2023
    • (2022)Network Traffic Shaping for Enhancing Privacy in IoT SystemsIEEE/ACM Transactions on Networking10.1109/TNET.2021.314017430:3(1162-1177)Online publication date: Jun-2022
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